For years, Mars has sat in an awkward middle ground, too geologically quiet to look like Earth. At the same time, it is too ...

Data from the Mars Express orbiter has been used to create a visualization of "a vast system of deep and steep valleys that ...

Researchers from the University of Oxford have uncovered evidence that Mars once hosted enormous, Earth-like magmatic systems ...

An artist's render of Mars. (Kevin M. Gill/Flickr/CC BY 2.0) For decades, our picture of Mars was of a dead desert world. Its ...

Could Martian mudstones be holding evidence of ancient microbes? New findings strengthen the case that the Red Planet once ...

An instrument on the Perseverance rover has identified large, complex carbon compounds alongside unusual patterns on the ...

The organic molecules could come from life or from ordinary chemistry — only samples returned to Earth can settle it.